Corey Lewandowski (l.) helmed the Trump campaign for 18 months.

President Trump’s former campaign manager recently remembered receiving emails about a campaign adviser flying to Moscow — but his memory is still fuzzy.

Corey Lewandowski, who helmed the Trump campaign for 18 months, waffled Tuesday during a heated exchange on CNN about just how much he knew about contacts between foreign policy advisers and Russians.

“I have never, to the best of my knowledge, ever communicated with anybody who was a Russian, Russian agent, Russian supporter or somebody who was from the Russian government in any way, shape or form,” Lewandowski told CNN’s Chris Cuomo.

Last week, the former lobbyist suddenly remembered an email exchange he had with Carter Page, a former Trump campaign foreign policy adviser who has extensive ties to Russia about a trip to Moscow.

Page testified recently he was in contact with Lewandowski about the trip and has the emails to prove it, which refreshed the campaign manager’s memory.

Lewandowski has previously said he had never “met or spoken to Carter Page in my life.”

On Tuesday, he wavered on his recollection, saying that, “I don’t know what Carter Page did as a private citizen.”

In a March interview, Lewandowski told USA Today he couldn’t remember whether he had or not given Page permission to travel to Russia and “gave a litany of contradictory answers about Page’s involvement in the campaign.”

Former Trump campaign manager Corey Lewandowski: "It's not for me to say" whether Trump Jr. should have communicated with WikiLeaks https://t.co/OeBDUqHYsw

Page testified that Lewandowski gave him the green light to head to Russia, as long as he didn’t present himself as a representative of the Trump campaign.

Lewandowski on Tuesday made light of his involvement in the decision.

“I don’t know what Carter Page did as a private citizen. I have no more ability to tell Carter Page that he can or cannot go somewhere as I have the ability to tell you you can and cannot go somewhere,” he said.

Page’s trip took place months after another campaign foreign policy adviser, George Papadopoulos, proposed using his Kremlin connections to arrange a meeting between Trump and Russian president Vladimir Putin meeting, according to his recently unsealed guilty plea for making false statements to the FBI.

Lewandowski sought to downplay the pair’s role in the campaign, despite the President praising them at the time as top foreign policy advisers.

“Those two individuals, Carter page was a volunteer on an advisory committee of which met one time and he didn’t show up for it,” Lewandowski said.

Both Page and Papadopoulos are at the center of several probes into Russia’s impact on the presidential election.

CNN's Chris Cuomo and President Trump’s former campaign manager Corey Lewandowski have a heated exchange on Nov. 14, 2017.

(CNN)

Papadopoulos’ plea came as a part of special counsel Robert Mueller’s federal investigation into possible collusion between the Trump campaign and the Kremlin.